If I change my mind about applying a filter, can I stop the process?
A2:
To cancel the filter as it's being applied, press Command+period (Mac) or Esc (Windows). To undo a filter, use the Undo command: Command+Z (Mac) or Control+Z (Windows). If it's too late to undo, use the History palette to revert to a stage before you applied the filter.
Find or shoot a picture of yourself or a friend, and load it into Photoshop. (If you don't have a digital camera or scanner, download a news photo from the Web, or a portrait from the Web site—see the Introduction for the URL.) Use the Blur and Sharpen filters to improve it. Find and remove wrinkles, eye bags, uneven complexions, and any other flaws. (In Hour 21, “Photo Repair—Black and White,” you'll learn more techniques for improving photos.)